:root {
  color-scheme: light dark;
  --bg: #0f1115;
  --card: #1a1d24;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #5b8cff;
  --accent-hover: #7aa2ff;
  --danger: #ff6b6b;
  --border: #2a2f3a;
  --ok: #3dd68c;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --text: #1a1d24;
    --muted: #5f6368;
    --border: #dadce0;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  display: flex;
  justify-content: center;
  padding: 2rem 1rem;
}

main {
  width: 100%;
  max-width: 420px;
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
  font-weight: 700;
}

.subtitle {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 2rem 1.25rem;
  text-align: center;
  background: var(--card);
  transition: border-color 0.15s, background 0.15s;
}

.dropzone.dragover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--card));
}

.dropzone p { margin: 0.5rem 0; color: var(--muted); }

.filename {
  color: var(--text) !important;
  font-weight: 600;
  word-break: break-all;
}

.btn {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.65rem 1.1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover { background: var(--accent-hover); }
.btn.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn.linkish {
  background: transparent;
  color: var(--muted);
  margin-top: 1rem;
  font-weight: 500;
}
.btn.linkish:hover { color: var(--accent); }

.progress-wrap { margin-top: 1.25rem; }
.progress {
  height: 8px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.1s linear;
}
#progress-label { color: var(--muted); font-size: 0.9rem; }

.error {
  margin-top: 1rem;
  color: var(--danger);
  background: color-mix(in srgb, var(--danger) 12%, transparent);
  padding: 0.75rem 1rem;
  border-radius: 8px;
}

.result {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: center;
}

#qrcode {
  display: inline-flex;
  justify-content: center;
  padding: 0.75rem;
  background: #fff;
  border-radius: 8px;
  margin-bottom: 1rem;
}

#qrcode img, #qrcode canvas {
  display: block;
  width: 220px !important;
  height: 220px !important;
}

#link {
  display: block;
  word-break: break-all;
  color: var(--accent);
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.expires {
  color: var(--ok);
  font-size: 0.9rem;
  margin: 0.75rem 0 0;
}